Add e6500 processor detection

Signed-off-by: York Sun <yorksun@freescale.com>
Signed-off-by: Andy Fleming <afleming@freescale.com>
diff --git a/arch/powerpc/include/asm/processor.h b/arch/powerpc/include/asm/processor.h
index 3247c80..f3acd17 100644
--- a/arch/powerpc/include/asm/processor.h
+++ b/arch/powerpc/include/asm/processor.h
@@ -950,6 +950,7 @@
 #define PVR_VER_E500_V2	0x8021
 #define PVR_VER_E500MC	0x8023
 #define PVR_VER_E5500	0x8024
+#define PVR_VER_E6500	0x8040
 
 #define PVR_86xx	0x80040000